Enhancement of sudden death of entanglement for driven qubits
arXiv:0806.3186 · doi:10.1007/s10909-008-9843-1
Abstract
We study the recently discovered phenomena of sudden death of entanglement for a system of two qubits, each of them independently longitudinally damped by a reservoir and subjected to a continuous driving. We show that driving produces, in the interaction picture, an effective bath that has elements amounting to various extra sources of noise (transverse, thermal squeezed, thermal longitudinal). As a result, the time of sudden death decreases due to driving, which we verify as well by direct numerical calculation. We suggest that this phenomenon can be studied systematically using superconducting qubits driven by microwave fields.
9 pages, 2 figures
References in corpus (8)
- Finite-Time Disentanglement via Spontaneous Emission
- Coupling Superconducting Qubits via a Cavity Bus
- Quantum information processing with circuit quantum electrodynamics
- Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
- Quantum Open System Theory: Bipartite Aspects
- Microwave-induced coupling of superconducting qubits
- Entanglement of superconducting qubits via microwave fields: classical and quantum regimes
- Interaction-free measurements with superconducting qubits